Finding the Fourth Proportional to 2,109.59, 3,164.35 and 570.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.59 : 3,164.35 = 570.59 : x
2. Step 2: Convert to fraction form
   2,109.59/3,164.35 = 570.59/x
3. Step 3: Cross multiply
   2,109.59x = 3,164.35 × 570.59
4. Step 4: Simplify right side
   2,109.59x = 1,805,527.79
5. Step 5: Solve for x
   x = 1,805,527.79/2,109.59
6. Step 6: Final answer
   x = 855.87